Page 53 - ICSE Math 4

Step 1: Consider 1 as the mul plier from the fi rst column and 1 as the mul plicand from
the fi rst row.
1 × 1 = 1. Write 1 in the square where Mul plier
they intersect.
× 1 2 3 4 5 6 7 8 9 10
Now, consider 1 as the mul plier 1 1 2
and 2 as the mul plicand. 2 2 4

2 × 1 = 2. Write 2 in the square where 3 3 6
they intersect. plicand 4 4 8
Similarly, considering 1 as the Mul 5 5 10
12
6
6
mul plier and the numbers given in 7 7 14
the fi rst column as the mul plicands, 8 8 16
complete the second column. 9 9 18

Step 2: Consider 2 as the mul plier from 10 10 20
the second column and 1 as the
Mul plier
mul plicand from the fi rst row.
× 1 2 3 4 5 6 7 8 9 10
1 × 2 = 2. Write 2 in the square where
1 1 2 3 4 5 6 7 8 9 10
they intersect.
2 2 4 6 8 10 12 14 16 18 20
Similarly, considering 2 as the 3 3 6 9 12 15 18 21 24 27 30
mul plier and the numbers given plicand 4 4 8 1216202428323640

in the fi rst column as mul plicands, 5 5 10 15 20 25 30 35 40 45 50
complete the third column. Mul 6 6 12 18 24 30 36 42 48 54 60
Step 3: Repeat by choosing the mul pliers 7 7 14 21 28 35 42 49 56 63 70
8 8 16 24 32 40 48 56 64 72 80
from the fi rst row and the
9 9 18 27 36 45 54 63 72 81 90
mul plicands from the fi rst column
10 10 20 30 40 50 60 70 80 90 100
and complete the grid.
Now, we can easily fi nd the product of any two numbers from 1 to 10 using the given grid
by loca ng the point of their intersec on.

For example, to fi nd the product of 3 × 8, look for the intersec on of the third row and
eighth column. The answer is 24.

Multiplication Facts

• Two or more numbers can be mul plied in any order. Their product always remains
the same.

For example, 52 × 9 = 468 or 9 × 52 = 468.
• The product of a number and 0 is always 0.

For example, 13 × 0 = 0 and 423 × 0 = 0.
• The product of a number and 1 is always the number itself.

For example, 18 × 1 = 18 and 204 × 1 = 204.

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